Home / 3,102.41-4,281.35-1,686.11

Finding the Fourth Proportional to 3,102.41, 4,281.35 and 1,686.11

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Solution

The fourth proportional to 3,102.41, 4,281.35 and 1,686.11 is: 2,326.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.41 : 4,281.35 = 1,686.11 : x
  2. Step 2: Convert to fraction form
    3,102.41/4,281.35 = 1,686.11/x
  3. Step 3: Cross multiply
    3,102.41x = 4,281.35 × 1,686.11
  4. Step 4: Simplify right side
    3,102.41x = 7,218,829.32
  5. Step 5: Solve for x
    x = 7,218,829.32/3,102.41
  6. Step 6: Final answer
    x = 2,326.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.